Some video downloader extensions or "save-from" websites rename files using unique hashes (like 0f71f09a... ) to prevent filename conflicts on their servers.
If you believe the file is safe, you can try opening it with the VLC Media Player , which is known for playing almost any MP4 file even if the name or header is slightly corrupted. Download 0f71f09a a2344e76(0) mp4
Platforms like Telegram , WhatsApp , or TikTok often save videos with alphanumeric strings to keep their internal databases organized. If you manually moved a file from an app's hidden "cache" folder to your gallery, it would retain this random-looking name. Platforms like Telegram , WhatsApp , or TikTok
If you don't remember downloading this file, do not open it . Randomly named files can occasionally be used to hide malware. Randomly named files can occasionally be used to
On Windows, you can right-click the file and select Properties > Details to see the video's length and frame width, which might help you identify what the video actually is.
If it won't play, you can upload the file to a service like CheckFileType.com to confirm it is actually a video and not another file type disguised with an .mp4 extension.